Angle fitting and method of making same



septao, 1941.

A'. L. PARKER ANGLE FITTING AND METHOD OF MAKING SAME Filed March 2,l1940 kram Falke?- g ffl/2% rrolP/ws ya the production of relativelysmall tube or pipe- P'atented Sept. 30, 14941` ANGLE FITTING AND METHODF MAKING SAME Arthur L. Parker, Cleveland, hio rli'mnieanm March z.1940', serial No. 321,995

Claims. (Cl. 2li-157m The present invention is generallyV concerned withthe metal working art, but is more particularly concerned with new anduseful improvements in an angie tube or pipe tting and to improvementsin the method of making such a fitting.

In fluid supply lines, it is-often'desirable to employ various forms oftube or pipe couplings for joining the ends of the tubes or pipes. In

fittings, some difficulty has been. encountered in economicallyproducingsmall angle ttings of the type which includes one or more anglebranches. It has been common practice tofcast' or mold these ttingsinone piece, and then machine work the extremities of the fittings sepa- 4rately. In the production of suchangle fittings, such as elbows or Tcouplings, it has also been proposed-to machine work these fittings frombar stock. These methods of producing 4angle fittings are expensive inthat they require oomon the relatively small ilttlngs. y An object ofthe present invention is to provide an angle fitting of the above typeand a method of making such an angle fitting which will greatly reducethe cost of manufacture andV which will greatly simplify the productionthereof.

A further object of the invention is to provide an angle fittingconsisting of separate parts or branches which are secured togetherwithout the necessity of utilizing a complicated machine securingoperation. A,

ill further object of the invention is to provide a method of producingsuch an angle fitting wherein at least one of the angle branches issecured to the fitting by brazing so as to el'iminate the necessity ofemploying a separate machine securing'- operation. A V

The above and other objects of the invention will inpart beobvious, and`will be hereinafter more fully pointed out.`

. In the accompanying drawing,

Figure 1 is a fragmentary perspective view of a metal bar from which thefitting is produced.

Figure 2 is a' similar` fragmentary perspective view showing oneV end ofthe bar after it has been machine worked to provide a threaded endportion.

Figure 3 isA an enlarged side elevation showing theslug including themachined end section,

opposite end of the slug may be similarly after it has been cut from thebar, and-illustrating, in dotted lines, themanner in which the Figure 4is a side-elevation of Figure the opposite end of the slug has been'machined to provide a threaded end portion andalso showing the passagesthrough the slug. Figure 5 is a detail perspective view oi' an anglebranch after it has been cut fromthe bar of Figures l and 2 and-fproperly machined.

Figure 6 is a' side elevation, insection, showing the manner in whichthe anglefbranch of Figure 5 is secured to the machined'slug of Figure4.

Figure 7 is a side elevationI of Figure 6.

Figure 8- is aside elevation of a modified form of angle fitting,showingsa plurality of angle branches.

According to the present invention,v the tube or pipe coupling isrelatively small and is in the ,form of an angle fitting. This anglefitting or plicated and expensive machinery for operating Icoupling isproduced from an extruded bar Il (Figure 1) which is preferably ofsquare cross section, although the cross section of the extruded bar maybe of any other desired cross section.` One end of the extruded bar. lilis ma- Ishined to provide an externally threaded end portion I I, asshown in Figure 2. It is to be understcodfof course, that this end ofthe bar lmay be machined to provide an internally threaded end'portionif desired. The bar is then cut along the line I2 (Figure V2) to providea slug section I3 which includes themachined end of the bar. This slugI3 is shown in Figure 3, and the opposite end thereof is also machinedto provide an externally threaded end portion It, as shown in Figurel@PI-lere again, it is to be understood that an internally threaded endportieri may be provided on the.' slug, depending upon the type oifitting which is desired.

.As .shown inFigure 44, the externally threaded end portions il, It aremachined tofa degree which' leaves substantially square surfaces aroundthe central portion of the slug I3.' This slug section is longitudinallybored or drilled to provide a central fluid passage I'i therethrough,

and one or more of the square central faces i5 are drilled or bored, as.at I1, so as to afford an aperture in communication with thelongitudinal passage I6. When it is desired to form a T fitting, onlyone of the faces I5 is bored, but other faces may be bored when itis'desired to form other types of fittings having a plurality of angle gextruded bar insubstantially the manner pointed I out above. It is notnecessary to produce this mined, y branch tting from a squareorrectangular bar since it may be produced from round bar stock. M Thisbranch iitting is provided with a single threaded end portion I9 whichis illustrated as being externally threaded, but it may, if desired,

be internally threaded. When this htting' is pro- 5 duced from a bar ofsquare cross section, there is formed a relatively narrow square surface2t at one end thereof, and this surface serves as a shoulder. A circularextension or shirt ti is provided onthe shoulder 2t and is of a sizelowhich is adapted to snugly iit within the omni@ ing or aperture il inone o the surfaces i oi the/slug i3 shown in Figure d.

When the slug section of Figure d and the angle branch it oi Figure 5are assembled, as ld shown in Figure t, to producethe nnished anglentting, the' circular extension ti on the angle branch snugly nts withinthe aperture it in the side it of the slug section. The shoulder t@ i isdisposed adjacent the surface iii on theslug an section, and asillustrated in the drawing, the,

periphery oi vthe shoulder 3d is coincident with the periphery of thesurface it on the slug section so as to provide an exact ht between theparte. These parts, that is. the slug section and p5 the angle branch,are secured together by a bracing operation. A washer t2 of a suitable-forni of brazing material may be applied between the adjacent surfacesoi the side it and the k"shoulder tu, and the assembled parts are sothen passed through a bracing furnace so ves to cause the parts tobecome `intimately united. y However, the dipping method may beemployed. in which case the angle branch may be` dipped into a bath ofmolten brazing material before it is joined to the slug section.

Various forms of angle ttings may be produced in the above manner. and adouble 'i' tting is shown in Figure 8. In the production oi such aiitting. an opposite side surface ita on the ,40

slug section it may be bored to provide an opening for receiving thecircular extension on another angie branch its.

The parts are then brazed together in themanner described above. It isof course obvious thatv i5 several angle branches may be secured to thecentral portion of the slug section and that elbow ttings may also beproduced in this manner.'

l From the foregoing description, it'vvill be seen 50 that each separatepart oi thedlnished angletting is produced from bar stock from which asection of desired length vis cut to provide a slug. 'I'he slugs aremachined to provide the desired forms of thread or other connections andare secured together'by a brazing operation. 'l'hus. the present methodeliminates the necessity of employing any machine. operation fordeforming one of the parts of the fitting or otherwise machineworking'one of the parts to effect the a0 desired connection between theseveral'parts.

Itis to be clearly understood that minor changes in-the details ofconstruction and arrangement of parts, and also minorl changes in thesteps of the method may be employed without departing from the scope ofthe invention set forthin the appended claims.

I claim: Y i i l. K

1. An angle tube fitting, comprising a main section having a passagetherein and a threaded portion at one end oi the passage, said mainsectionhaving a pluralitybf non-circular faces around'the peripherythereof with at least one of said faces provided with an aperturetherethroughwin communication with said passage, an

angle section having a passage therethrough and a threaded portion atone end thereof, said angle section having a. shoulder portion adjacentthe opposite end thereof and an extension on said shoulder portioniitting within the aperture in the apertured` face of said main section,said shoulder portion having the peripheral edge thereof coinciding withthe peripheral edge oi the`apertured face on the main section. andineens providing a brazed connection between the adjacent surfaces oithe apertured face on the main section. and of the shoulder portion onthe angle section whereby to connect said sec tions withoutlemploying,av machine securing op eration.

. 22. An angle tube tting comprising a inainV section having externallythreaded end portions and an intermediate portion consisting oi? aphrraiity oi substantially square faces around the periphery thereof,said main section having a longitudinal passage therethrough and anaperture through at least one of said intermediate faces, an anglesection having a passage there through and a threaded portion at one endthereof, said angle section having a shoulder portion adjacent theopposite end thereof and an eutension on said shoulder portion ttingwithin Athe aperture in the apertured face on the main section, saidshoulder portion having the peripheral edge thereof coinciding with theperipheral edge of the apertured face on the main section whereby theshoulder portion does not extend over the threaded end portions on themain section, and means providing a brazed connection between theadjacent surfaces of the apertured face` on the main section andreithe.y shoulder portion on the angle section whereby-to connect saidsections without employing s. machine securing operation. 3. The methodof producing an angle tube dtting from a length of bar stockhaving anoncircular cross section, which consists in machining one end of thebar stock to provide a threaded portion, cutting a slug from themachined end of the bar stock to provide a plurality of non-circularfaces around the periphery of the slug,`machine working the slug toprovide a longitudinal passage through the threaded portion and also toprovide an aperture through at least one of vthe faces and incommunication with the passage, forming an angle section from bar stockhaving a cross section substantially identical with the periphery of theapertured face on the and of the apertured face coinciding, and securingthe anglel section to the slug by a brazed con` nection between theadjacent surfaces on the shoulder portion of the angle section and theapertured face on the slug.

4. The method of producing an angle fitting from a length of bar stockof non-circular cross section, which consists in machining one end ofthe bar stock to provides. threaded portion, cut-` ting a slug from themachined endeof the bai stock, forming a threaded portion at theopposite end of the slug so'as to leave a plurality of intermediatenon-circular i'aces around the pe-` riphery of the slug. machine workingthe slug to provide ua longitudinal passage therethrough incommunication with the threaded end portions and to also provide anaperture through an in-V Ytermediate facein communication with thepassage, forming an angle section from bar stock havinga crosssectionsubstantially identical with the periphery of at least one of theintermediate faces on the slug.' yforming a threaded portion at one endot the angle section whereby to leave a shoulder portion. adjacent theopposite end thereof with the periphery of the shoulder portionsubstantially coincident with the periphery ot the aperturedintermediate face on the slug. forming an extension on the shoulderportion of theansle section, assembling the angle section and the slugwith the extension ntting within the aperture in the intermediate faceon the slug and with the peripheral surfaces ofthe shoulder por-'- tionand oi' the apertured intermediate face coinciding, and securing theangle section to the slug by a brazed connection between the adjacentsurfaces on the shoulder portion of the angie section and the aperturedintermediate tace on the slug.

5. The method of producing an angle tube :lit-

' ting from an extruded metal bar with a substantially square crosssection, which consists in maehiningoneendoithemetalbartoprovideaso l 3threaded portion. cutting a slug from themachined end of themetal bar.forming a threaded portion at the opposite end of the slug whereby toleave an intermediate peripheral portion consisting of a plurality otsubstantially more external faces, machine working the slug to provide alongitudinal passage therethrough in communication with the threaded endportions and to also provide anaperture through at least one of theintermediate faces in communication with the passage, forming an anglesection i'rom an extruded bar of substantially identical cross sectionand with a threaded portion at one end thereoi.I whereby to leave ashoulder portion adiacentthe opposite end thereof withthe periphery otthe shoulder portion substantially coincident with the periphery of theadjacent intermediate face on the slug. forming an extension on theshoulder portion oi! the angle section, assembling the angle section andthe slug withl the extension ntting within the aperture in theintermediate tace on the slug and withv the periph-A eral edges ot theshoulder portion and of the ad# jacent intermediate face coinciding. andsecuring theanglesectiontotheslugbyabrasedconnection between theadjacent surfaces ot the shoulder portion on the angle section and theadiacentintermediate face on the slug.

Y' An'rnunnpsitm.

